Two North Dakota DOT projects on I-29 north from the South Dakota line included 42 lane miles plus adjacent shoulders of concrete pavement crack & seat and asphalt overlay. Antigo averaged 4.2 lanes miles plus shoulders per day by completing the crack & seat in 10 work days. The northbound lanes were constructed in 2016 and the southbound lanes in 2017.
The North Dakota DOT crack & seat specification required inducing full-depth cracks at a longitudinal spacing between 18″ and 24″ with minimal spalling of the surface. A combination of Falling Weight Deflectometer (FWD) and visual inspection was used to determine the most effective crack pattern. The cracked pavement was seated by 4 passes with a 40-ton proof roller.
I-29, n/o South Dakota State Line, mile marker 0.0 to 11.3, Richland County, North Dakota, USA
Cracked & seated 471,193 square yards and broke for removal 21,081 square yards
9" thick jointed plain concrete pavement (JPCP)
4" thick asphalt overlay including a SMA surface
Crack & seat completed in 10 work days in August, 2016, and in July, 2017
North Dakota Department of Transportation, PCN 20309 & 19711
Central Specialties, Inc., Alexandria, MN (2016) and Border States Paving, Inc., Fargo, ND (2017)